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libutil: Fix infinite loop in filterANSIEscapes on '\r'

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E.g. nix-instantiate --eval -E 'abort "\r"' hangs.

Found by afl-fuzz.
This commit is contained in:
Tuomas Tynkkynen 2018-02-19 17:32:11 +02:00
parent 056d28a601
commit 1d0e42879f
1 changed files with 1 additions and 1 deletions
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2
src/libutil/util.cc
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@ -1216,7 +1216,7 @@ std::string filterANSIEscapes(const std::string & s, unsigned int width)
else if (*i == '\r') else if (*i == '\r')
// do nothing for now // do nothing for now
; i++;
else { else {
t += *i++; w++; t += *i++; w++;